How good is that repo, really?

Paste a GitHub repository. Get one number out of 100, the five categories behind it, and a short list of what to fix. No sign-in, no permissions, nothing installed.

Try one

facebook/react
vercel/next.js
rust-lang/rust
sveltejs/svelte

Five categories: Docs, community, activity, popularity, hygiene — weighted to 100.
Same rubric every time: A fixed set of checks against public metadata. No model, no judgement call, no drift between two runs.
Zero permissions: Nothing to install and nothing to authorise. Private repos are out of scope on purpose.